There's been a numerous of topics about this.
When I started here, I felt the same aswell. So I made a topic about it and I got some serious critic, but also reactions and pm's of people who felt the same.
I recone that my post was a little bit more harsh and I stepped on many toes.. Hell, I even left PSC because I got pissed about it
I think you are partly right.
I agree that some people here do get more votes than they should get, but basicly if your work is good and you post it in time, you score well.
As others said, thursdays are anonymous and in those contests, you get a pretty good idea where you stand.
It's also important to know that your skill of Photoshop makes you vote different as if you were new to Photoshop.
If you developped some skills by now, you see the amount of work that went into a chop. You recognises techniques and you value a chop by the work and time that went into it along with the outcome.